boxee - Boxee
Freevo - Freevo Media Centre | Home Theatre Platform HTPC & PVR (has dvb/tuner cards support)
GB-PVR - GB-PVR mediacentre. TV, Music, Video, Pictures, DVD (has limited dvb/tuner cards support)
MeediOS - MeediOS - The HTPC app of the future (has dvb/tuner cards support)
MediaPortal - MEDIAPORTAL - free media center - Home (has dvb/tuner cards support)
moovida - Moovida, the free media player - play all your files - AVI, mp3, MKV, DivX, MOV, MP4
XBMC - XBMC
Freevo - Freevo Media Centre | Home Theatre Platform HTPC & PVR (has dvb/tuner cards support)
GB-PVR - GB-PVR mediacentre. TV, Music, Video, Pictures, DVD (has limited dvb/tuner cards support)
MeediOS - MeediOS - The HTPC app of the future (has dvb/tuner cards support)
MediaPortal - MEDIAPORTAL - free media center - Home (has dvb/tuner cards support)
moovida - Moovida, the free media player - play all your files - AVI, mp3, MKV, DivX, MOV, MP4
XBMC - XBMC